• Title/Summary/Keyword: risk evaluation criteria

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Study about the Evaluation of Freezing Risk Based Road Surface of Solar Radiation (도로 노면 일조량에 따른 결빙 위험도 평가 방법에 관한 연구)

  • Lee, Dong-Hyun;Jeong, Won-Seok;Kim, Hong-Jin;Kim, Jiwon
    • Journal of the Korea institute for structural maintenance and inspection
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    • v.17 no.5
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    • pp.130-135
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    • 2013
  • Anti-icing system can reduce traffic accidents and congestion by quickly removing the frozen road surface area. there is no decision criteria for determining application of the Anti-icing system in Korea. In this study, we proposed the decision criteria for determining application of the anti-icing system based on weather and road conditions, i.e., geometric and topographic conditions. Regional climate survey, Solar Radiation analysis, and dynamic vehicle simulation considered road geometry was conducted to standardize the installation method of anti-icing system. Also, we have developed a software that can be determined an installation of anti-icing system.

The Effect of Program on Emotion of Patients with Schizophrenia: A systematic review of randomized controlled trials (조현병 환자의 정서를 위한 프로그램의 효과: 무작위 대조군 실험연구의 체계적 고찰)

  • Eun-Sol Ju
    • Journal of The Korean Society of Integrative Medicine
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    • v.11 no.2
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    • pp.77-86
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    • 2023
  • Purpose : This study systematically assessed 9 emotion-function programs for schizophrenic individuals that have been implemented over the past 10 years in Korea and abroad, with the objective of providing clinical grounds and data for further programs. Methods : This study identified 2,558 studies from among those registered in the RISS, KISS, EMbase, PubMed and Scopus databases from 2013 to September 2023, using 'schizophrenia' AND 'emotion' AND ('program' OR 'therapy') as keywords. Of the 2,558 studies retrieved from electronic databases, 602 duplicate papers were excluded. After this process, 1,915 papers that did not meet the study's inclusion and exclusion criteria were excluded based on their titles and abstracts. Following a review of the texts of the remaining 41 papers, nine papers were finally selected, excluding 32 papers according to the selection and exclusion criteria. Results : Programs for the emotional function of patients with schizophrenia have continued to be researched. The results of an evaluation on the quality of the selected literature confirmed that a majority of the reviewed items were "uncertain", confirming that there was a risk of bias. The interventions for emotions included art, cognitive-behavioral, and physical programs, of which art programs were frequently applied. Most of the interventions were implemented in hospitals. The dependent variables for evaluating emotions included emotional expression, depression, anxiety, and positive emotions, and among them, emotional expression was used most frequently. Accordingly, the Berkeley expressivity questionnaire was commonly used as an evaluation tool. Conclusion : This study is significant for intending to analyze domestic and overseas programs for the emotions of patients with schizophrenia, thereby proposing the direction for planning and applying interventions in clinical settings. In follow-up studies, it will be necessary to develop a protocol that confirms interventions according to the settings and patient characteristics of programs and expands the scope of literature reviews.

Acculturation, Cultural Orientation, and Clothing Involvement of International Students in Korea

  • Youn, Song-Yi;Lee, Kyu-Hye
    • Journal of the Korean Society of Clothing and Textiles
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    • v.36 no.6
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    • pp.641-652
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    • 2012
  • This study took the conceptual framework of acculturation styles into the empirical investigation of international students in Korea. This research identifies the differences in acculturation styles, the characteristics of each segment, the effect of acculturation styles on clothing involvement (clothing involvement and risk probability), and the effect of cultural orientation values (individualism and collectivism) as covariates. The participants were international students attending a university located in Seoul. Data from 153 international students were used for statistical analysis. Respondents were grouped into four acculturation styles (integration, assimilation, separation, and marginalization). The assimilation group had the highest mean score of clothing interest. Cultural orientation values showed a significant covariate effect. With individualism as covariates, the main effect of acculturation styles on clothing interest was significant. In clothing product evaluation criteria, the integration group regarded design, fit and trend as most important. The marginalization group showed a mean score that was significantly lower in brand preference and satisfaction; however, the assimilation group had a mean score that was significantly higher.

The Estimation of the Depth of Anesthetic Using Higher-Order Spectrum Analysis of EEG Signals

  • Park, Jong-Duk;Ye, Soo-Young;Jeon, Gye-Rok;Huh, Young
    • Journal of Biomedical Engineering Research
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    • v.28 no.2
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    • pp.287-293
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    • 2007
  • The researchers have studied for a long time about the depth of anesthesia but they don't make criteria for the depth of anesthesia. Anesthetists can't make a prediction about patient's reaction. Therefore, patients have potential risk such as poisonous side effect, late-awake, early-awake and strain reaction. In this study, the distributed characteristics on the bispectrum and bicoherence, the type of nonlinear signal processing, as a result of the coupling of EEG were presented according to depth of anesthesia. These results were consistent with a trend of delta ratio that the index of evaluation for the depth of anesthesia. The higher-order spectrum (HOS), the bispectrum and bicoherence, gives the useful information about depth of anaesthesia than other indexes.

Radionuclide-Specific Exposure Pathway Analysis of Kori Unit 1 Containment Building Surface

  • Byon, Jihyang;Park, Sangjune;Ahn, Seokyoung
    • Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT)
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    • v.18 no.3
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    • pp.347-354
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    • 2020
  • Site characterization for decommissioning Kori Unit 1 is ongoing in South Korea after 40 years of successful operation. Kori Unit 1's containment building is assumed to be mostly radioactively contaminated, and therefore radiation exposure management and detailed contamination investigation are required for decommissioning and dismantling it safely. In this study, site-specific Derived Concentration Guideline Levels (DCGLs) were derived using the residual radioactivity risk evaluation tool, RESRAD-BUILD code. A conceptual model of containment building for Kori Unit 1 was set up and limited occupational worker building inspection scenario was applied. Depending on the source location, the maximum contribution source and exposure pathway of each radionuclide were analyzed. The contribution of radionuclides to dose and exposure pathways, by source location, is expected to serve as basic data in the assessment criteria of survey areas and classification of impact areas during further decommissioning and decontamination of sites.

A Study on Implementation of Automobile Control Software Testing Process Based on TMMi (TMMi 기반 자동차 제어 SW 테스팅 프로세스 구축에 관한 연구)

  • Jang, Jin-Wook
    • Journal of Information Technology Services
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    • v.8 no.3
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    • pp.159-169
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    • 2009
  • The issue of method of software testing process implementation has recently been in the spotlight in korea and some vendor make every effort to improve the software testing process through the evaluation of TMMi. The level of software process is at initial level, nevertheless, so the high quality of software is not guaranteed. This paper apply to the TMMi Level2 Assessment criteria of Automobile control software testing process. The test policy and strategy, test planning, test monitoring and control, test design and execution, test environment goal. The result need to emerge development process connection on the test policy and strategy process, test planning process etc. Also, the study analyzed the infra structure to reach the repeated level via key process area. As the result the process implementation in organization suggests the policy development and the implementation activity. Finally, the practical can refer to this paper in order to implementation the software testing process.

Quantitative Risk Analysis for Railway Tunnels (철도터널 화재에 대한 정량적 위험도 분석)

  • Park, Jung Hyun;Shim, Cha Sang
    • Journal of the Korean Society for Railway
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    • v.20 no.3
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    • pp.400-412
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    • 2017
  • What is particularly noteworthy from Korean and foreign railway tunnel disaster prevention standards is that for the sake of rapid evacuation, more stringent standards for provision of evacuation passages, which require high cost, are being applied. Korean standards stipulate that passage installation should be determined in accordance with the level of risk through a QRA analysis of each tunnel with 1km or longer length. As, however, detailed application criteria as fire occurrence probability, fire occurrence scenario, size of fires and evaluation criteria for level of social risk are not available, additional costs may be incurred due to excessive design. Thus, standards of an appropriate level need to be established. With this backdrop, this study selects detailed application conditions of a reasonable and appropriate level through a study and analysis of relevant documents and analyzes the maximum length of tunnels to which the application of evacuation passages, or the application major evacuation promotion facilities, can be relaxed, together with a QRA analysis of model tunnels (for high speed rail) with different tunnel lengths. In addition, the QRA results on tunnels, including those on the Honam high-speed rail, and analysis results for the model tunnels, are compiled, ; the ultimate results are compared with Korean and other countries' standards related to evacuation promotion facilities, As a result, The appropriateness of application standards are reviewed. These results are expected to be utilized as basic material for establishing a reasonable disaster prevention plan that will consider safety and economies.

Data-Driven Approaches for Evaluating Countries in the International Construction Market

  • Lee, Kang-Wook;Han, Seung H.
    • International conference on construction engineering and project management
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    • 2015.10a
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    • pp.496-500
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    • 2015
  • International construction projects are inherently more risky than domestic projects with multi-dimensional uncertainties that require complementary risk management at both the country and project levels. However, despite a growing need for systematic country evaluations, most studies have focused on project-level decisions and lack country-based approaches for firms in the construction industry. Accordingly, this study suggests data-driven approaches for evaluating countries using two quantitative models. The first is a two-stage country segmentation model that not only screens negative countries based on country attractiveness (macro-segmentation) but also identifies promising countries based on the level of past project performance in a given country (micro-segmentation). The second is a multi-criteria country segmentation model that combines a firm's business objective with the country evaluation process based on Kraljic's matrix and fuzzy preference relations (FPR). These models utilize not only secondary data from internationally reputable institutions but also performance data on Korean firms from 1990 to 2014 to evaluate 29 countries. The proposed approaches enable firms to enhance their decision-making capacity for evaluating and selecting countries at the early stage of corporate strategy development.

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A Study on the Importance of Software Quality-in-use for Educational Chatbot: Using the AHP Method (학습용 챗봇 소프트웨어 사용 품질 특성의 중요도 연구: AHP기법을 활용하여)

  • Yunjeung Min;Jaekyoung Ahn
    • Journal of Information Technology Services
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    • v.23 no.5
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    • pp.59-72
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    • 2024
  • Recent advancements in IT technology and infrastructure have led to the widespread application of AI chatbots across various fields, including education, where they have shown effectiveness in improving classroom focus and achievement [1][2]. This study analyzes the importance of quality-in-use for AI chatbots in elementary Korean language learning based on ISO/IEC 25000 Quality-in-use standards, aiming to provide quality evaluation criteria for future educational chatbot development. The research methodology involved a two-tier hierarchy of 5 main characteristics and 13 sub-characteristics of quality-in-use, with surveys conducted among industry professionals and instructors after preliminary investigations. Results showed that situational adaptability, effectiveness, and efficiency were prioritized in the main characteristics. In sub-characteristics, situational completeness, learning accuracy, and flexibility were top-ranked. Instructors emphasized the importance of risk mitigation, reflecting their concern for reducing private education costs and improving learning environments. Industry professionals prioritized completeness in chatbot outputs. These findings suggest that prioritizing instructor-valued features in subject-based learning chatbots can enhance their utility and effectiveness in educational settings. The study also highlights the potential for leveraging differences in quality evaluation priorities between industry professionals and instructors in developing learning chatbots

Development of Seismic Performance Estimation Service of Bridge through Seismic Risk Assessment (지진위험도평가 방법을 통한 교량의 내진성능 추정 서비스 개발)

  • Cho, Han Min;Lee, Jin Hyuk;Park, Ki Tae;Kim, Kun Soo;Jung, Kyu San;Kim, Jae Hwan
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.43 no.5
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    • pp.535-542
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    • 2023
  • In order to understand the seismic performance of a bridge, it is common to review through seismic performance evaluation and numerical analysis of the target bridge. Seismic performance evaluation and review through numerical analysis are analysis methods for specific target bridges, and many problems can arise in each management body managing bridges nationwide. Therefore, in this study, research was conducted to estimate the seismic performance of public bridges with various types and characteristics. Seismic performance was estimated by applying the seismic risk assessment method, calculating the seismic fragility curve for the type and specifications of the bridge, and estimating the seismic performance of the bridge in use by applying the domestic seismic design standard. In addition, by installing it on the platform, service items were established so that users can easily review the estimation of seismic performance of domestic bridges.